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(N0 Nudel.)

' E. P. BARNES.

PIPE GUTTER.

No. 287,899. Patented Nov. 6, 1883.

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UNITED' STATES PATENT EEICE.

ELBEIDCE E. lanterns, CE NEW HAVEN, CONNECTICUT.

Pies-CUTTER.

sencrrrcn'rron forming part of Letters Patent No. 287,899, dated November e, 1888.

Application filed March 1 2, 1883. (No model.)

To LZZ whom itrmtty concern:

Be it known that I, ELBEIDGE F. BARNES, a citizen of theUnited States, residing. at New Haven, in the county of New Haven and State of Connecticut, have invented certainv new and useful Improvements in Pipe-Gutters, of which the following is a specication, reference being had therein to the accompanying drawings.

This ini-entionconsists incertain improvements, as hereinafter described and claimed, in pipe-cutters and similar articles.

In the drawings, Figure l represents a side elevation of a pipe or rod cutter constructed according to my present improvement-s, a part of the construction therein shown being the subject of another application for patent led von the 30th January, i883, Serial No. 83,502, and patented to me under date of the 31st July, i883. Fig. 2 represents a top plan view thereof, partly in sec-tion. Fig. 3 represents a side elevation, and Fig. et an edge elevation of a cutting wheel or-disk. constructed according to my invention. Fig. 5 represent-s a side elevation of a pivot-pin constructed according to my invention.

A represents the upper jaw or head or" the pipe-cutter, B the sliding or lower jaw thereof, and C the screw-threaded handle connected with said lower jaw, and by means of which the said lower jaw is raised or lowered and the tool rotated, these several parts being Vrepresented as of similar construction to those shown in my aforesaid patent; but I do not, in the present connection, coniine myself to such construction, as the wheels or cutters and theirbearing-pins herein described are equally well adapted for use with other forms of jaws. Each j aw has for each pivot or bearing pin two bearings-one, c, cylindrical,` and the other, b, truste-conical. l., C

l) represents the wheel or disk,which isconstructed of gradually-tapering convex form on each side from the `center routward to the edge. By this form of construction all liability of the edge of the cutter breaking or bending or turning in use is avoided, as such a wheel-cutter is rendered very strong by reason of its shape. Moreover, va cutter thus constructed is not liable to crumble or snag, all

of which objections are present in cutters not ting disks or wheels within the respective tools, to rivet the pivot-pin at one or both ends within the framing ofthe tool. This method is objectionable, as'thercby the pivot or bearing pin and disk or cutter-wheel cannot be very quickly or easily removed whenit is dc- .sired to regrind the cutter or to substitute another for that already. in position; and, again, the disks cannot in such an arrange ment be quickly or easily placed in position, es where riveting or other similar means of connection are employed special tools have to be used; but by my improvements the pivot-pin can be readily passed through the frame and disk and simply tapped' into position, and when it is desired to remove the `disk for any purpose a slight blow upon the tapering or truste-conical end of the pin will loosen the same and permit of its being readily drawn out and the cutter removed.

In use the pivot-pins of cutting wheels and disks soon wear away on that side on which the friction of the wheel is. Thevcntters are thereby caused to run irregularly and loosely. W'hen such occurs the pivot-.pin E can be readily removed and turned around, so as to present an unworn portion for the cutter to bear against, and this action can be followed several times, thereby allowing of a pivot-pin constructed according to my improvements being used a much longer time than would be 6o `.lt has been customary, when securing cnt-l possible where' such pins have to be riveted in position, and where a new pin has to be provided each time it becomes so worn as to impair the efficiency of the cutter.

Having thus described my invention,what I claimis- In a pipe or rod cutter, the combination, 'In testimony whereof I'affix my signature in 'With the jaw having two bearings, one cylinpresence of two witnesses. drical and the other frusto-conical, with the Y cylindrical bearing-pin having a, frusto-coni- ELBRIDGE F. BARNES. 5 cal end ttin-g in the latter bearing with a driving-t, and the cutter-Wheel rotating on Vitnesses: y

said pin, substantially as and for the purpose LUCIUS P. DEMING,

set forth. G. A. OAKS. 

